peters



iff/77?,

N'PETERS, PHOTO-LITHOGRAPHER. WASHXNGTON D C strat dtlljrr.

A. PEKIN, 0F PARIS, FRANCE.

Leners Patent No. 101,034, dared March 22", 1870.

IMPROVEMENT IN SAW-MILLS The Schedule referred to in `these Letters Patent and making part of the same vTo all ywhom it may concern Be it known that I, A. PEKIN, of Paris, in the Empire of France, have inventedl a new and useful Improvement in Saw-Mills; and do hereby declare that the following description, taken in connection withtheaccompauying plate of drawings hereinafter referred to, forms a full and exact specification of t-he same, wherein I have set forth the nature and principles of my said invention, by which the same may be distinguished from others of a similar class, together with such parts as I claim and desire to secure by Letters Patent. l

My invention `relates to that class of sawing-machines in which a flexible band blade is made to pass over and about two pulleys arranged at a suitable distance apart, by the continuous rotary motion of which continuous rectilinear' motion is imparted to the cutting part of the saw-blade; and

The nature of my invention consists in certain modifications and improvement-s in the details of the same, in the arrangement of the devices and mechanism ernployed, and in the employment of certain appliances for obviating the diiiicultics which have heretofore attended the use of endless-band saws, to wit:

In the arrangement of the shafts and gearing by means of which slow rectilinear motion is imparted to bearings of the upper or tension-pulley, and the distance between the pulleys bearing the saw -hlade accurately adjusted.

Second, in the arrangement of the automatic feedmoton employed for the purpose of operating the carriage upon which the wood to be sawed is carried.

Third, in the arrangement of the shafts and gearing made use of for holding the lumber in position upon the carriage, and laterally adjusting the same,

Fourth, in the arrangement of the pulleys, shafts, and gearing made use of for the purpose ot imparting a rapid lateral motion to -the carriage carrying the lumber.

lIn the accompanying vplate of drawings which illustrate my invention and form a part of the specification thereof, and in which corresponding parts are illustrated by similar letters- Figure 1 is a front elevation of the machine with my invention applied thereto.

Figure 2 is a side elevation, and

Figure 3 a plan of the same'.

The construction and operation of my invention is as follows, to wit:

Ay A A A represent a foundation of masonry, upon and within which are placed and arranged the mechanism and devices composing the machine. v

Upon the pedestal B B B rests the main standard C, forming a support for the carriage G, which travels upon angular ways secured to the same, and is vertically adjusted, raised, or lowered, by the screwshaft E, which is operated by the spur-gearing c d, screw-shaftf, bevel-gears a b, and crank-shaft e.

The said standard C also forms a support for the 'brackets K K, in the ends of which are cut perfora-` tions for the reception of the cylindrical tube T, which slides vertically within the same, and is raised or lowered by means of a rack and pinion, and heldin position by the set-screw i.

To the lower end of the said tube is secured the jointed guide, consisting of an outer-and an inner box. The inner is pivoted or jointed to the outer box by means of a pin passing through lugs or flanges projecting from the upper sides of the said boxes.

The. wooden guidewithin the boxes through which the saw-blade passes is heldin position by means of a set-screw, and the required direction is given to it by means of a screw attached to the outer box and working in a female screw cut in a flange attached to the inner box.

The shaft of the lower fixed pulley revolves in bearings H, one of which is rigidly attached to the pedestal B, upon which the standard C is placed, and the other secured in the foundation A.

The said shaft carries the main driving-pulleys and also a cone of six pulleys, M, which imparts motion to a corresponding cone, N, operating the carriage R by means of the feed-motion hereinafter described.

The upper or tension-pulley I revolves upon a shaft, g, which has its bearings iu journal-boxes in the arms' of the carriage G.

A double track, fparallel with the planeof the horizon, is secured to the top of the foundation, upon which runs the rails of the carriage It, carrying the lumber to be sawed. The said rails are-providedwith grooved tracks to obviate the diiculty which would be otherwise caused by friction. Y

Upon the top of the said rails, and at rightangles with the same, are secured the cross-pieces Z, upon which are cut acute-angled guides.

Upon the said guides runners carrying the beam W are arranged to move af right angles with the direction of the rails R', and the said runners are operated by v means of screw-shafts having their' bearings in the cross-pieces Z.

Attached to the said beam are the screw-shafts and traveling-hooks z, by means of which-the lumber to be sawed is held in position.

The screw-shafts operating the said runners are connected by chain-gearing in such a manner that they move laterally in unison with each other.

The carriage R-is operated by the shaft h, attached to the end ol which is the bevel-gear q, which engages with the bevel-gear c upon the end of the shaft y.

The shaft y has its bearings in journal-boxes atq e I tached to the cross-beam O, and is provided with a spur-gear r, which, through the intermediate gearing or feed-motion s t, imparts motion to the pinion n working in-a rack attached to the bottom of the carriage R.

Motion is also imparted in the desired direction by means of the shaft lcarrying the pulleys P P P P, the pulley P' on one end of the said shaft being connected by means of an open band with the pulley p upon the shaft h, which, together with the bevel-gearing, may be engaged or disengaged from the said shaft by means of the lever and couplingr m.

The driving-pulleys upon the main axle are thrown v in and out of gear by means of the slide l operated L Letters Patent, in the following clauses- 1.1lhe arrangement of the standard C, carriage G, screw-shaft E, spur-gearing c d, shaft j', bevel-gears a b, and crank-shaft e, when constructed and operating substantially as described.

carriage carrying the lumber is moved, consisting of the combination of the shaft K, bevel-gear g, bevelgear fr, shaft y, spur-gearing o s t, pinion n, and rack attached to the bottom of the carriage, when constructed and operating substantially as described.

3. The arrangement ofthe shaft Z carrying the pullcy's P l P P', the pulley p on the shaft h, the bevelgearing g, and the lever operating the coupling by which the said bevel-gearing g and pulley P are rating substantially as described.

4. The arrangement of the foundation A, pedestal B, shafts hand K,cro ssbeam O, track f', standard C, levers 2 and 5, and slides 1 and 4, when constructed and operating substantially as shown and described.

5. 'lhe arrangement of the track f, rails R and cross-bars Z, with t-he screw-shafts operating the runners upon which the beam W is' secured, and travstantially as described. y Y

The above specification of my invention signed by me this 10th day of December, A. D. 1868. Witnesses: PERIN J. U. ZUsT, DAVID B. FULLER.

2. The automatic feeding apparatus by which *the thrown in and out of gear, when constructed and opeeling hooks z, when constructed and operating subi 

